Hello,

Jalmari

Can you tell me how to write outputs in S7-1500 plc?

I have 100 input at address 100-199.

and 100 output at address 100-199

If I write to Q100.1 It does not seem to do anything. Any idea why?

I inserted .gsdml I got from beckhoff guy and just set in/out areas. Do I need to do  something differently?

Inputs are working just fine.

your informations are very weak, not clear. You mean you have defined BYTE data type? How we can be sure about your settings if you don't show your inside I/O data cfg?

If I write to Q100.1 It does not seem to do anything. Any idea why?

Again same, pls try think about your question. This must check other side device so cooperate with that person or do other checks and tests. Really try imagine how can we know and see this or help if we are not there. It can be also true that your other side set reset signals to yours, who knows. In this case your set Output signal is simply set to 0 or other depended to actual cfg on other device.

Hello,

for first I think that your new defined areas are wrong and with more than double space. IO Controller will indicate error also becaue its imported previous GSDML file is different to this your new cfg, logically or you've sent him a new cfg? Now you probably understand what is matter here, right? In my opinion, because also consistency and number of elements are different completelly, this can be problem although part of areas are within the range. Ok to your questions:

1. I will try to specify my problem. My main question is that do I reference I/O areas in right way?

I don't know what is required for your prj and also due requirements from Master side.

2. Can I spefify input and output area in S7 config any way I want as long as configuration allows it?

Yes but I expect then changed definition imported in to IO Controller side to take effect.

3. First input bit is I100.0 and output Q500.0? Is this always 100 input bytes and 100 output bytes no matter what config?

No. As you can see now with your new definition you don't have 100 bytes but 200, for each area. Hope you understand difference between BYTE and WORD data type.

4. So there is no special Beckhoff requirement?

I don't know about 3-rd party side, contact that person responsible for that.

5. I made new configuration just to make sure input and output addresses are in different area.

They are at same area but new added simply set double byte elements as you have defined before.

6. I have specifications for all bits and bytes what they should do. But they do not seem to work. And I have no reliable good way to check this since I am not sure if my configuration is made in right way.

You have chance to test that if you attach and configure other HW you have at place and import that your GSDML file. easy test.

7. You are right that problem can be in Beckhoff plc. But other programmer is sort of difficult to reach. I will try this of course.

I can't help you with this.

8. I have included screeshot of configuration now. I am sorry I could not do this in initial post.

No problem.